Pneumatic technology is a professional technology which uses compressed air as medium to drive and control machinery. Because of its energy saving, pollution-free, high efficiency, low cost, safe and reliable, simple structure and other advantages, widely used in various machinery and production lines. In the past, the pneumatic system and its components on automobile, tractor and other production lines were designed, manufactured and maintained by each factory.
Expansion of pneumatic technology application is the symbol of pneumatic industry development. Pneumatic components are mainly used in two aspects: maintenance and matching. In the past the sale of domestic pneumatic components to be used in recent years, directly as the main supporting sales share increased year by year. The application of domestic pneumatic components, from thousands of dollars worth of metallurgical equipment to only 1 ~ 200 yuan chairs. The plate fork wheel raillubricating machine stopping the train, street cleaning, lifting equipment, special workshop in the military command vehicles with a specially developed domestic pneumatic components. This shows that pneumatic technology has penetrated into all walks of life, and is expanding.
Although China's pneumatic industry has reached a certain scale and technical level, but compared with the international advanced level, the gap is very large. China's pneumatic products accounted for only 1.3% of the world's total output value, only 1/21 of the United States, Japan's 1/15, Germany's 1/8. This is not commensurate with the great power of about 1000000000 people. From the species point of view, a Japanese company has 6500 varieties, China's only its 1/5. Product performance and quality level gap is also great.
The pneumatic technology is increasingly applied in the automatic assembly of various industries and automatic processing of small, special items of equipment, the original traditional pneumatic components is increasing, and continue to develop new products to meet market demand, the variety of pneumatic components is increasing, the trend of its development are mainly in the following aspects:
A smaller, lighter weight and lower power consumption. In electronics, pharmaceuticals and other manufacturing industries, the processing volume is very small, it will limit the size of pneumatic components, miniaturization, light is the first development direction of pneumaticcomponents. Have been developedabroad just thumb size, effective area for the ultra small solenoid valve 0.2mm2. Can develop a small size and larger flow components more ideal. To this end, the same size of the valve, the flow has increased 2 ~ 3.3 times. There is a series of small solenoid valve, the valve body width of only 10mm, the effective area of up to 5mm2 wide 15mm, effective area of 10mm2.
Foreign solenoid valve power consumption has reached 0.5W, will be further reduced to adapt to the combination of microelectronics.
Gas processing components, most of the domestic and foreign use of block type block structure, not only compact size, and combination, maintenance are very convenient.
In order to improve the positioning accuracy of the cylinder, the cylinder application of the auxiliary brake mechanism and servo system is more and more common in order to improve the positioning accuracy of the cylinder. With servo system cylinder, even if the supply pressure and the negative load change, still can get + 0.1mm positioning accuracy.